Hey Niels,
Yeah, so what I see in having a library availability is like a window similar to the x sheet or dopesheet, where important assets an animator may want or have need of can be stored. This allows the user to stay just in AP and not have a ton of files opened to different assets. Things like color cards could be stored there, character mouth charts and model sheets. I’m just one of those that hates juggling between apps and folders and plugins and multiple windows opened. I do see where your coming from though, being it’s a traditional animation app, it’s not necessarily needed, but it would be cool!
Cheers,
Mike